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//
// GTMLogger+ASL.h
//
// Copyright 2007-2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
//
#import <Foundation/Foundation.h>
#import <asl.h>
#import "GTMLogger.h"
// GTMLogger (GTMLoggerASLAdditions)
//
// Adds a convenience creation method that allows you to get a standard
// GTMLogger object that is configured to write to ASL (Apple System Log) using
// the GTMLogASLWriter (declared below).
//
@interface GTMLogger (GTMLoggerASLAdditions)
// Returns a new autoreleased GTMLogger instance that will log to ASL, using
// the GTMLogASLFormatter, and the GTMLogLevelFilter filter.
+ (id)standardLoggerWithASL;
@end
@class GTMLoggerASLClient;
// GTMLogASLWriter
//
// A GTMLogWriter implementation that will send log messages to ASL (Apple
// System Log facility). To use with GTMLogger simply set the "writer" for a
// GTMLogger to be an instance of this class. The following example sets the
// shared system logger to lot to ASL.
//
// [[GTMLogger sharedLogger] setWriter:[GTMLogASLWriter aslWriter]];
// GTMLoggerInfo(@"Hi"); // This is sent to ASL
//
// See GTMLogger.h for more details and a higher-level view.
//
@interface GTMLogASLWriter : NSObject <GTMLogWriter> {
@private
GTM_WEAK Class aslClientClass_;
NSString *facility_;
}
// Returns an autoreleased GTMLogASLWriter instance that uses an instance of
// GTMLoggerASLClient and the default ASL facility.
+ (id)aslWriter;
// Returns an autoreleased GTMLogASLWriter instance that uses an instance of
// GTMLoggerASLClient and the supplied facility. See asl_open(3) for a
// discusssion of ASL facility strings.
+ (id)aslWriterWithFacility:(NSString *)facility;
// Designated initializer. Uses instances of the specified |clientClass| to talk
// to the ASL system. All logs from this method will use |facility| as the ASL
// log facility. This method is typically only useful for testing. Users
// should generally NOT use this method to get an instance. Instead, simply use
// the +aslWriter or +aslWriterWithFacility: methods to obtain an instance.
- (id)initWithClientClass:(Class)clientClass facility:(NSString *)facility;
@end // GTMLogASLWriter
// An ASL-specific log formatter that replicates the same fields as
// GTMLogStandardFormatter except for those (date, process name) that ASL
// records independently.
@interface GTMLogASLFormatter : GTMLogBasicFormatter
@end // GTMLogASLFormatter
// Helper class used by GTMLogASLWriter to create an ASL client and write to the
// ASL log. This class is need to make management/cleanup of the aslclient work
// in a multithreaded environment. You'll need one of these GTMLoggerASLClient
// per thread (this is automatically handled by GTMLogASLWriter).
//
// This class should rarely (if EVER) be used directly. It's designed to be used
// internally by GTMLogASLWriter, and by some unit tests. It should not be
// used externally.
@interface GTMLoggerASLClient : NSObject {
@private
aslclient client_;
aslmsg msgOptions_;
}
// Designated initializer, |facility| is supplied to asl_open().
- (id)initWithFacility:(NSString *)facility;
// Sends the given string to ASL at the specified ASL log |level|.
- (void)log:(NSString *)msg level:(int)level;
@end
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